Spanish native speakers, suggestions for a text processing app

Hi guys, I am looking for an app for text processing because first of all it seems that the voice dreamer writer app is not available at least for the app store in Mexico, also the pages app doesn't work with doc extensions, and last but not least, microsoft word app doesn't work with my Logitech ultra thin keyboard cover as I can't write words with accents because word don't accept them.

So do you work with another text processing app? And do you have this same problem with your external keyboards in microsoft word?

Thanks and best regards